Media type: Article Title: Breaking through the double blockade : inter-atlantic wartime communications at Roche Contributor: Kurosawa, Takafumi [Author] imprint: 2015 Published in: Jahrbuch für Wirtschaftsgeschichte ; (2015), 1, Seite 227-256 Language: English ISSN: 0075-2800 Origination: Footnote: Literaturangaben